Overview
The LMH0394SQX/NOPB, produced by Texas Instruments, is a 3G HD/SD SDI low power extended reach adaptive cable equalizer. This component is designed to equalize data transmitted over cable or any media with similar dispersive loss characteristics. It operates over a wide range of data rates from 125 Mbps to 2.97 Gbps and supports various standards including ST 424, ST 292, ST 344, ST 259, and DVB-ASI. The LMH0394 is notable for its ultra-low power consumption, extended cable reach, and improved immunity to crosstalk.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC - VEE) | 2.375 | 2.5 | 2.625 | V |
| Input Data Rate | 125 Mbps | - | 2.97 Gbps | - |
| Equalized Cable Lengths (Belden 1694A) | - | - | 200 meters at 2.97 Gbps, 220 meters at 1.485 Gbps, 400 meters at 270 Mbps | - |
| Power Consumption (Normal Operation) | - | 115 mW | - | mW |
| Power Consumption (Power-Save Mode) | - | 17 mW | - | mW |
| Operating Temperature Range | -40°C | - | 85°C | °C |
| Package Type | - | - | 16-pin WQFN | - |
Key Features
- Ultra-low power consumption with normal operation at 115 mW and power-save mode at 17 mW.
- Extended cable reach with equalized cable lengths up to 200 meters at 2.97 Gbps, 220 meters at 1.485 Gbps, and 400 meters at 270 Mbps.
- Supports ST 424, ST 292, ST 344, ST 259, and DVB-ASI standards.
- Programmable output common-mode voltage and swing through SPI interface.
- Programmable de-emphasis for up to 40 inches of FR4 trace losses.
- Active sensing circuitry for robust performance and enhanced immunity to variations in the input signal launch amplitude.
- DC restoration to handle pathological data conditions.
- Optional SPI serial interface for configuring multiple devices in a daisy-chain configuration.
- Industrial temperature range from -40°C to +85°C.
Applications
- Broadcast video routers, switchers, and distribution amplifiers.
- Serial digital interfaces (SDI) in various broadcast and professional video equipment.
- Professional video transmission and distribution systems.
Q & A
- What is the primary function of the LMH0394?
The LMH0394 is a 3G HD/SD SDI low power extended reach adaptive cable equalizer designed to equalize data transmitted over cable or similar media.
- What data rates does the LMH0394 support?
The LMH0394 supports data rates from 125 Mbps to 2.97 Gbps.
- What standards does the LMH0394 comply with?
The LMH0394 complies with ST 424, ST 292, ST 344, ST 259, and DVB-ASI standards.
- What is the typical power consumption of the LMH0394?
The typical power consumption in normal operation is 115 mW, and in power-save mode, it is 17 mW.
- What is the maximum equalized cable length supported by the LMH0394?
The LMH0394 can equalize cable lengths up to 200 meters at 2.97 Gbps, 220 meters at 1.485 Gbps, and 400 meters at 270 Mbps using Belden 1694A cable.
- Does the LMH0394 support SPI interface?
Yes, the LMH0394 supports an optional SPI serial interface for configuring multiple devices in a daisy-chain configuration.
- What is the operating temperature range of the LMH0394?
The operating temperature range is from -40°C to +85°C.
- What package type is the LMH0394 available in?
The LMH0394 is available in a 16-pin WQFN package.
- Does the LMH0394 have power management features?
Yes, the LMH0394 includes power management features such as auto sleep control to reduce power consumption when no input signal is present.
- Can the output common-mode voltage and swing be programmed?
Yes, the output common-mode voltage and swing can be programmed through the SPI interface.
